Frequency divider for high frequencies

Abstract

A frequency divider for high frequencies including a first and a second bistable circuit, each of which include two cross-coupled transistors, in which the common emitter circuits of the transistors of the two bistable circuits are each connected through a current source to a point of constant potential. The collectors of the transistors of the first circuit are each connected to a respective collector of each of the transistors of the second bistable circuit, and a coupling resistor is included between the collector and the base of each of the auxiliary transistors.

What is claimed is: 
     
       1. A frequency divider comprising a first and a second bistable circuit, each comprising two-cross-coupled transistors, first and second gating transistors connecting said cross-coupled transistors of said first and second bistable circuits respectively to a point of constant potential;   the base of said first gating transistor being connected to a first signal input, and the base of said second gating transistor being connected to a second signal input inverted relative to said first signal input;   said first bistable circuit including a pair of auxiliary transistors, connecting the collector of each of said transistors of said first bistable circuit by means of collector-base path to a respective collector of one of said transistors of said second bistable circuit, the emitters of said auxiliary transistors being connected to a point of constant potential; and   a coupling resistor having a tap, connected between the collector and base of each of the auxiliary transistors, said tap being connected to the base of said auxiliary transistor.